Help understanding PCIe 16x/8x/16x/8x
#6
I suggest that you check out AMD EPYC 2 "Rome" motherboards. They have 128 native PCIE lanes. Please note that dual socket EPYC 2 systems would still have 128 PCIE lanes because in the dual CPU configuration, 64 PCIE lanes from each CPU is reserved for the communication between the CPUs so you are left with 2X 64 lanes.

EPYC 2 motherboards also support PCIE 4.0 and so do the RTX 3000 Series GPUs. 

PCIE 4.0 is (not exactly but nearly) two times faster than PCIE 3.0 in bandwidth.
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RE: Help understanding PCIe 16x/8x/16x/8x - by Longtail - 10-29-2020, 08:27 AM